Explosive-engine.



' a. G. HANDY. EXPLOSWE ENGINE.

APKLIGA'HGH PILEH 001215, 1996.

WITNESSES:

ROBERT G. HANDY. 0F BAY CITY. MICHIGAN.

EXPLOSIVE-ENGINE.

Specification of Letters Patent.

Patented Dec. 29, 1914.

Application filed October 15. 1906. Serial No. 338,960.

To all IP/LOHL it may (101106172;

Be it known that I, Roman G. HANDY, a citizen of the lnitcd States of America. residing at Bay (ity, in the county of Bay and State of Michigan, have invented certain new and useful li'nprovements in E) plosivedlngines. of which the following s a specification, reference being bad therein to the accompanying drawings.

This invention relates to new and useful inn'irovements inexplosive two-cycle engines.

The invention cons sts in the matters hereinafter set forth, and more particularly pointed out in the appended claim.

In the drawings, Figure 1 is a vert1cal central longitudinal section through an explosive engine of the open base type one of the cylinders being shown in side elevation. Fig. 2 is a vertical transverse section on the line X-X Fig. 1. Fig. 3 is a horizontal section through the inlet passage on the line YY Fig. 1. Fig. 4 is a horizontal section through the exhaust passage on the line ZZ Fig. 1.

In the drawings, l have shown an explosive engine of the open base type in which 1 is the base, 2 the crank pits, 3 the main bearings, --l the crank shaft. 5 the connecting rods, (3 the pistons, 7 the wrist pins, 8 the cylinders counter-bored or enlarged at their lower ends and 9 the supporting pillars connecting the base and cylinders by means of suitable nuts 10.

11 are the cylinder heads, 12 the sparkplugs, 13 the inlet ports, 14 the exhaust ports, a carburetor 26 or like vaporizing means also being provided.

The cylinder 8 comprises an explosion chamber 15 and a compression chamber 16 of larger diameter. The compression chamber of one cylinder communicates with the explosion chamber of the other cylinder through a connecting passage 17 commitmcating with an annular passage 18 in the cylinder, which is in effect a substantially annular discharge mouth although crossed with vertical spaced ribs to prevent the piston rings from springing in.

19 is an annular passage communicating with the exhaust port 14 and provided with vertical connecting webs 20 like the annular passage 18. As a preferred fOlII of construction, the annular passages 19 are formed in an exterior rib. and the connecting passages 17 are formed by extended integral flanges from these ribs which overlap when the cylinders are in juxtaposition, thereby making thepassages very short as if the cylinders were integral, and they may be so made. if desired.

The piston (5 is formed at its lower end with a laterally extending flange 21 of a diameter to fit within the enlarged bore of the cylinder forming the compression chane ber 16 and at its upper end is provided with a conical head 22 to fit within the explosion chamber and a correspondingly shaped deflector 23 having a central opening 24 and preferably integrally formed with the piston head by webs forming passages .25 connecting the annular inlet passage with the explosion chamber.

Having thus fully described the invention it is intended to operate as follows ()n the up-stroke of each piston the gas previously drawn into the annular space of the enlarged portion above the piston end flange is forced through the connecting passage and the head of the other piston into the eX plosiou chamber or main barrel of the cylinder above the piston head, driving out ahead of it through the exhaust ports 19 the products of the previous explosion. On the down-stroke of each piston a fresh charge is drawn into the annular chamber of the colmter-bored portion. This gives the regular two-cycle effect of the ordinary engine.

Having thus fully described my invention what I claim is In an explosive engine, the combination of a pair of cylinders connected intermediate their ends only, each cylinder having a closed upper end, and an open counter-bored lower portion, an inlet port in its wall near the lower end of said counter-bored portion and an exhaust port near the upper end of said portion, an annular inlet passage encircling the cylinder near the head of the counter-bored portion and communicating with the interior of the cylinder through 

